package com.whpu.mall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.whpu.common.utils.PageUtils;
import com.whpu.common.utils.Query;
import com.whpu.mall.product.dao.AttrGroupDao;
import com.whpu.mall.product.entity.AttrEntity;
import com.whpu.mall.product.entity.AttrGroupEntity;
import com.whpu.mall.product.service.AttrGroupService;
import com.whpu.mall.product.service.AttrService;
import com.whpu.mall.product.vo.AttrGroupWithAttrsVo;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Autowired
    private AttrService attrService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params, Long catelogId) {

 /*       if (catelogId == 0) {
            return this.queryPage(params);
        } else {
            QueryWrapper<AttrGroupEntity> agWrapper = new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId);
            //select * from pms_attr_group where catelog_id=? and (attr_group_id=key or attr_group_name like key)
            String key = (String) params.get("key");  //是否有查询条件,查询条件可也能为id 也可能为name
            if (!StringUtils.isEmpty(key)) {
                agWrapper.and(obj -> obj
                        .eq("attr_group_id", key)
                        .or()
                        .like("attr_group_name ", key));
            }
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params), agWrapper);
            return new PageUtils(page);
        }*/
        String key = (String) params.get("key");
        //select * from pms_attr_group where catelog_id=? and (attr_group_id=key or attr_group_name like %key%)
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
        if(!StringUtils.isEmpty(key)){
            wrapper.and((obj)->{
                obj.eq("attr_group_id",key).or().like("attr_group_name",key);
            });
        }

        if( catelogId == 0){
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }else {
            wrapper.eq("catelog_id",catelogId);
            IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }
    }

    /**
     * 根据分类id获取分类下所有分组以及这些组关联属性
     * @param catelogId
     * @return
     */
    @Override
    public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrs(Long catelogId) {

        //查询分组信息
        List<AttrGroupEntity> groupList = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));

        //查询分组属性
        List<AttrGroupWithAttrsVo> attrGroupWithAttrsVo = groupList.stream().map(item -> {
            AttrGroupWithAttrsVo vo = new AttrGroupWithAttrsVo();
            BeanUtils.copyProperties(item, vo);
            List<AttrEntity> attrs = attrService.getAttrRelation(vo.getAttrGroupId());
            vo.setAttrs(attrs);
            return vo;
        }).collect(Collectors.toList());

        return attrGroupWithAttrsVo;
    }

}
